[:PiraScheme#Mechanics: Table of Mechanics Demonstration]

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[:Demonstrations:Lecture Demonstrations]

Tuning Fork Waveforms, 3D46.16

Topic and Concept:

Location:

attachment:TuningForkOscilliscope18-400.jpg

Abstract:

Use a microphone and oscilloscope to display the waveforms of 256, 512, and 1024 Hz tuning forks.

Equipment

Location

ID Number

Tuning Forks

WS, Bay A1, Shelf #1]

Oscilloscope

Mic and Pre-Amplifier

Important Setup Notes:

Setup and Procedure:

  1. Connect the mic to the pre-amplifier with a the appropriate cable.
  2. Connect the pre-amplifier to the oscilloscope input with a coaxial cable.
  3. Plug in the oscilloscope and the pre-amplifier. Switch these on.
  4. Place the tuning fork nearby and strike with a mallet.
  5. Position the mic near the vibrating tuning fork so that the signal is displayed clearly on the oscilloscope. The display range may need to be adjusted.
  6. Try displaying the signal for other frequencies (other tuning forks).

Cautions, Warnings, or Safety Concerns:

Discussion:

Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.

attachment:TuningForkOscilliscope01-250.jpg

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attachment:TuningForkOscilliscope20-250.jpg

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attachment:TuningForks01-250.jpg

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Videos:

References:

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